/Engine/Source/Runtime/Core/Public/Containers/SortedMap.h
Creates an iterator over the values associated with a specified key in a map. This will be at most one value because keys must be unique
[TKeyIterator](API\Runtime\Core\Containers\TSortedMap\TKeyIterator) CreateKeyIterator ( [KeyInitType](API\Runtime\Core\Containers\TSortedMap\KeyInitType) InKey )